Submission #198710

#	Time	Username	Problem	Language	Result	Execution time	Memory
198710		Neklixx	PIN (CEOI10_pin)	C++14	30 / 100	71 ms	9064 KiB

pin

#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define all(v) v.begin(), v.end()
#define sh cin.tie(0); cin.sync_with_stdio(0); cout.tie(0);
#define FILE freopen("test.in", "r", stdin);
#define vprint(v) for (int ii = 0; ii < v.size(); ii++){cout << v[ii] << " ";}
#define debugv(v) if (v.size() != 0) {cout << "[ "; for (int __ = 0; __ < (int)(v.size()) - 1; __++){cout << v[__] << ", ";} cout << v[(int)(v.size()) - 1] << " ]" << endl;} else {cout << "[]" << endl;}
#define debug cout << "-----------------------------------------------" << endl;
#define print1(a) cout << "{ " << a << " }" << endl;
#define print2(a, b) cout << "{ " << a << ", " << b << " }" << endl;
#define print3(a, b, c) cout << "{ " << a << ", " << b << ", " << c << " }" << endl;
#define print4(a, b, c, d) cout << "{ " << a << ", " << b << ", " << c << ", " << d << " }" << endl;
using namespace std;
#define int long long
const int INF = 1e9 + 228;
const int MAXN = 1e3 + 28;
map<string, int> mapa[MAXN];

string to2(int x) {
	string res = "";
	while (x > 0) {
		res += (x % 2);
		x /= 2;
	}
	char zero = 0;
	while (res.size() < 4) {
		res += zero;
	}
	return res;
}
int n;
vector<string> v;

signed main()
{
#ifdef LOCAL
    FILE;
#endif
    sh;
    int d;
	cin >> n >> d;
	for (int i = 0; i < n; i++) {
		string s;
		cin >> s;
		v.pb(s);
	}    
	int ans = 0;
	for (int mask = 0; mask < (1 << 4); mask++) {
		string now = to2(mask);
		int sm = 0;
		for (int i = 0; i < now.size(); i++) {
			sm += now[i];
		}	
		if (sm != 4 - d)
			continue;
		for (int i = 0; i < n; i++) {
			string t = "";
			for (int j = 0; j < now.size(); j++) {
				if (now[j] == 0)
					continue;
				t += v[i][j];
			}
			mapa[mask][t]++;
		}
		for (auto to : mapa[mask]) {
			ans += ((to.S * (to.S - 1)) / 2);
		}
	}
	cout << ans << endl;
    return 0;
}

Compilation message (stderr)

pin.cpp: In function 'int main()':
pin.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < now.size(); i++) {
                   ~~^~~~~~~~~~~~
pin.cpp:61:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = 0; j < now.size(); j++) {
                    ~~^~~~~~~~~~~~

• Subtask 1: 30 / 100